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Filament with easily removed protective coating and methods for stripping the same

a technology of protective coating and filament, which is applied in the direction of cladded optical fibre, instruments, optical elements, etc., can solve the problems of ineffective approach, slow speed, and inevitably weak filament, and achieve the effect of minimizing the volume of reagents, easy setting up devices, and easy removal of protective coatings

Inactive Publication Date: 2006-06-22
ILLUMINA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a new invention and its various embodiments. The dimensions and geometries provided in the text are just for illustration and other dimensions and geometries can be used if desired. The invention can be applied to different applications, sizes, and manufacturing requirements. The patent also mentions that certain features, characteristics, alternatives, or modifications described in one embodiment can be used in other embodiments without changing the scope of the invention. The invention is a construction that includes specific elements and parts arranged in a certain way. The patent aims to efficiently achieve the objects set forth and allows for changes to be made without limiting the scope of the invention.

Problems solved by technology

However, due to the mechanical nature of the process, the filament was inevitably weakened.
Since the target filament size for micro beads is 28 microns (um), this approach is not effective.
Although this method essentially works in that it removed the coating, it has the disadvantage of having a slow speed combined with questions surrounding the effectiveness of the strip at the molecular level.

Method used

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  • Filament with easily removed protective coating and methods for stripping the same
  • Filament with easily removed protective coating and methods for stripping the same
  • Filament with easily removed protective coating and methods for stripping the same

Examples

Experimental program
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Embodiment Construction

FIG. 1: Applying the Coating

[0023]FIG. 1 shows a drawing tower generally indicated as 10 having a preform 12 arranged in a furnace 14, in which a filament 16 of bare glass is drawn. In operation, the bare filament 16 is coated by passing it through a cup 18 that has a hole in the bottom and is filled with an Aquabond coating 20. A heater 22 arranged in relation to the cup 18 provides heat to the cup 18 for maintaining it at a predetermined temperature. After the filament is coated with Aquabond 20, the filament 16 with the Aquabond coating 20 thereon is taken-up on a wheel or spool 24, as shown.

[0024]FIG. 5(a) shows a filament 16 having a full coating of Aquabond according to the present invention.

[0025] In effect, the method involves applying the Aquabond coating 20 directly to the filament 16 during the draw process. Like other thermoplastic coatings the material transitions from a solid to a liquid at an elevated temperature. Aquabond 65 begins to soften at about 60 degrees C. ...

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Abstract

The present invention provides a filament with an easily removable protective coating as well as a method and apparatus for applying the protective coating to the filament during a draw process that can be easily removed with a reasonably benign solvent such as water, or if necessary, acetone or ethanol. The protective coating is water-soluble and can be easily dissolved in-line with a spooling process. The coating material may include a water-soluble “wax-like” material called Aquabond 65, distributed by Aquabond Technologies, as well as other grades of Aquabond such Aquabond 55 and Aquabond 85, which behave essentially the same but are dissolved at different temperatures.

Description

CROSS REFERENCES TO RELATED APPLICATIONS [0001] This application claims benefit to provisional patent application No. 60 / 629,006 (WFVA / CyVERA nos. 714-1.18 / CV 75PR), filed Nov. 17, 2004, which is hereby incorporated by reference in their entirety. [0002] The following cases contain subject matter related to that disclosed herein and are incorporated herein by reference in their entirety: U.S. patent application Ser. No. 10 / 661,116 (CyVera Docket No. CV-0044), filed Sep. 12, 2003, entitled “Method of Manufacturing of a Diffraction grating-based identification Element”.BACKGROUND OF INVENTION [0003] 1. Technical Field [0004] The present invention relates to a method and apparatus for manufacturing a filament having an easily removed protective coating, as well as a method and apparatus for easily removing the protective coating from the filament. [0005] 2. Description of Related Art [0006] Optical filament is typically manufacturer with a protective coating that protects the filament ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B05D5/06B05D1/18
CPCD01D11/06
Inventor PUTNAM, MARTIN A.PERBOST, MICHELBRUCATO, ROBERT N.
Owner ILLUMINA INC
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